170 KHOPALOCEEA. 



to which the yellow portions of those wings are sprinkled with dark scales, in some 

 specimens the yellow being nearly pure, in others almost wholly obscured. Another 

 point of variation lies in the dark band near the inner margin of the primaries, which 

 in some cases joins the outer border, but in others, as is usual in this group, sometimes 

 falls short of it. Some females are almost wholly fuscous, and nearly all have the 

 lighter portion of the wings overspread with dark scales. The specimens from Eastern 

 Mexico, Cordova, &c. are hardly typical, the males approaching those of T. jucunda, so 

 that one cannot always be certain to which form they should be referred ; but the form 

 of Western Mexico, as a whole, is fairly definite. 



Mr. Smith's specimens from Western Mexico were all taken between June and 

 October, that is, during the wet season. A single male was captured at Teapa in 

 April, and Godman's Orizaba specimens in December, so that the insect probably flies 

 during the whole year. 



d'". Inner area of secondaries white. 



20. Terias persistens. (Tab. LXIIL %g. 24, 25 <$ , 26, 27 $ .) 



Terias persistens, Butl. & Druce, Cist. Ent. i. p. 110 1 ; P. Z. S. 1874, p. 359 2 . 



T. cepioni similis, sed posticis albis nee flavis distinguenda. 



Hab. Mexico, Misantla, Orizaba (F. D. G.), Jalapa (H. J. Flwes), Atoyac (H. H. 

 Smith) ; Guatemala, Central valleys, Duenas (F. D. G. & 0. S.), Cahabon (Champion) ; 

 Nicakagua, Chontales (Belt) ; Costa Rica ( Van Fatten l 2 ), Irazu and San Francisco 

 (Rogers); Panama, Bugaba (Champion), Calobre (AreS), Lion Hill (M'Leannan). 



We have described and figured Costa Rican specimens, the types of Messrs. Butler 

 and Druce' s T. persistens K The species is closely allied to T. rhodia of Felder, being 

 similarly marked on the underside ; but the dark band parallel to the inner border of 

 the primaries in the male is much narrower in the latter species, and has a tendency to 

 become obsolete. Specimens from Eastern Mexico frequently have a slight tinge of 

 yellow on the secondaries, and are rather less rufescent on the underside of those wings ; 

 they thus show an approximation towards T. cepio, which is found in the same districts. 



Its range in altitude extends from the sea-level to a height of 5000 feet. 



21. Terias lydia. (Tab. LXIIL figg. 20, 21 <y , 22, 23 $ .) 



Terias lydia, Feld. Wien. ent. Mon. v. p. 87 l ; Reise d. Nov., Lep. p. 206 2 . 



Terias elathea, Reakirt, Proc. Ent. Soc. Phil. ii. p. 360? 3 ; Boisd. Lep. Guat. p. 12 4 ? 



Terias palmir a, Butl. P. Z. S. 1871, p. 532°"; Butl. & Druce, P. Z. S. 1874, p. 359 (nee Poey) 6 . 



Terias eugenia, Butl. P. Z. S. 1871, p. 531 7 ; Butl. & Druce, P. Z. S. 1874, p. 359 (nee Wallengren) 8 . 



T. sidonice affinis, sed posticis interne pure albis, femina vitta interna vix ulla et area pallida haud fusco 

 atomata. 



Hab. Mexico 4 , Orizaba, Jalapa (F. D. £.), Atoyac, Teapa (E. H. Smith), Cordova 



